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TPS76701QDR

1A adjustable LDO with 230mV dropout, 85µA Iq, and 200-ms RESET delay in 8-SOIC

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制造商零件：

TPS76701QDR

包装：

8-SOIC (5.0 x 3.98 x 1.5 mm)

品牌：
产品类别：
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说明

产品概览

The TPS76701QDR is a fast-transient-response 1-A low-dropout (LDO) linear regulator from Texas Instruments, available in an adjustable output version programmable from 1.5 V to 5.5 V via an external resistor divider. Housed in an 8-pin SOIC package, it features an ultra-low quiescent current of 85 µA typical and an open-drain RESET output with a 200-ms delay for power-on reset supervision, making it ideal for battery-powered and DSP/FPGA core supply applications.

主要规格

输出类型 Adjustable (1.5 V to 5.5 V)
Maximum Output Current 1 A
输入电压范围 2.7 V to 10 V
Dropout Voltage 230 mV typical @ 1 A
静态电流 85 µA typical
Accuracy ±2% over line, load, and temperature
PSRR 60 dB @ 1 kHz
Output Noise 55 µVrms
RESET Delay 200 ms typical
工作温度 -40°C to 125°C
包装 8-SOIC

特点

  • Ultra-low 85 µA typical quiescent current independent of output load
  • Fast transient response with 10 µF low-ESR output capacitor stability
  • Open-drain power-on reset (RESET) output with 200-ms delay for microprocessor supervision
  • Sleep mode: TTL high on EN pin reduces quiescent current to 1 µA
  • Thermal shutdown protection and over-current limiting
  • PMOS pass element enables very low dropout and ground-current independence from load

应用

  • Battery-powered DSP and microcontroller core supply rails
  • Portable instrumentation and handheld devices requiring long battery life
  • FPGA and CPLD I/O and core voltage regulation
  • Post-regulation for switch-mode power supplies
  • Automotive and industrial systems needing RESET supervision

The TPS76701QDR from Texas Instruments is a member of the TPS767xxQ family of fast-transient-response 1-A low-dropout linear regulators. The adjustable version allows the output voltage to be set from 1.5 V to 5.5 V using an external resistor divider, with a reference voltage of 1.1834 V typical. The device is built with a PMOS pass transistor that provides very low dropout voltage (230 mV typical at 1 A for the 5-V version) and maintains quiescent current at just 85 µA across the entire output current range, significantly extending battery life in portable applications. An integrated undervoltage comparator drives an open-drain RESET output with a 200-ms delay, enabling reliable microprocessor power-on reset supervision.

The TPS76701QDR operates through three functional blocks: (1) PMOS Pass Element — a P-channel MOSFET configured as a voltage-controlled resistor regulates the output, with dropout voltage directly proportional to output current since the PMOS behaves as a low-value resistor; (2) Error Amplifier and Feedback — the adjustable version uses an external resistor divider to set the output voltage, with the error amplifier comparing the divided output against an internal 1.1834 V bandgap reference and driving the PMOS gate to maintain regulation; (3) Supervisory Circuit — an internal comparator monitors the output voltage and asserts the open-drain RESET output low when the output drops below the threshold, releasing it after a 200-ms timeout once the output returns above the valid level. The enable (EN) pin can place the device into sleep mode, reducing quiescent current to 1 µA.

针脚 名称 功能
1 接地 地面参考
2 EN Enable input (active high; TTL high = sleep mode shutdown)
3 IN Input voltage supply
4 IN Input voltage supply
5 出局 Regulated output voltage
6 出局 Regulated output voltage
7 FB Feedback input for adjustable version (connect resistor divider)
8 重置 Open-drain power-on reset output (active low, 200-ms delay)
  • Battery-powered DSP core supply providing 1.8 V at 1 A from a 3.3 V rail with RESET supervision
  • Portable medical instrument requiring ultra-low quiescent current for extended battery life
  • FPGA development board with adjustable core voltage (1.2 V to 3.3 V) and power-on reset
  • Post-regulation of a 5 V switching converter to a clean 3.3 V rail with 60 dB PSRR
  • Industrial control system with thermal shutdown protection and microprocessor watchdog reset
模型 制造商 主要区别
TPS76701QD TI Same device, cut-tape packaging
TPS76801QDR TI Same family with Power-Good (PG) instead of RESET
TPS76733QDR TI Fixed 3.3 V output version
TLV1117-ADJ TI Lower cost 800 mA LDO, no RESET
AMS1117-ADJ Advanced Monolithic Systems Budget alternative 1 A LDO without supervisor
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All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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联系我们

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

发货与付款

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

服务与包装

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Professional Packaging Standards

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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